I have a 2012 f 150 3.5 eco boost with 103000km that runs

Customer Question

I have a 2012 f 150 3.5 eco boost with 103000km that runs rough when the motor is cold, the dealership has found gas in the oil which they think they have fixed but still runs rough now they think possibly that the problem is with the timing chain, what are your thoughts, seems that there isn't any warranty